Allpar has been reporting on the development of the supercharged 6.2 Hemi for many months now, and estimates of its power have varied over that time. We were assured that it was supposed to have 700 horsepower, but we’ve been down that path before with the 6.4 (600 hp rumored, 470 hp reality) and other engines. It’s hard to tell how much is initial optimistic expectations, how much is first-run dyno figures (cut back later as things like alternators, pumps, and oil pans are added), and how much is going from gross to SAE net horsepower.
For the 6.2 Hemi, therefore, we took 700 horsepower, subtracted an abritrary 60 for gross-to-net, then another 60 for changes to make sure the engine can last the now-standard 200,000 miles under the crazy conditions to which owners will subject it. We have been told by several sources now that our estimate of..
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